55740057 has 4 divisors (see below), whose sum is σ = 74320080. Its totient is φ = 37160036.

The previous prime is 55740049. The next prime is 55740071. The reversal of 55740057 is 75004755.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 55740057 - 2³ = 55740049 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55740007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9290007 + ... + 9290012.

It is an arithmetic number, because the mean of its divisors is an integer number (18580020).

Almost surely, 2^55740057 is an apocalyptic number.

It is an amenable number.

55740057 is a deficient number, since it is larger than the sum of its proper divisors (18580023).

55740057 is a wasteful number, since it uses less digits than its factorization.

55740057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18580022.

The product of its (nonzero) digits is 24500, while the sum is 33.

The square root of 55740057 is about 7465.9263993158. The cubic root of 55740057 is about 381.9933503041.

The spelling of 55740057 in words is "fifty-five million, seven hundred forty thousand, fifty-seven".